Cita APA

Medina, S. (2010). Helping Around the World. Oxford: Oxford University Press.

Chicago Style Citation

Medina, Sarah. Helping Around the World. Oxford: Oxford University Press, 2010.

Cita MLA

Medina, Sarah. Helping Around the World. Oxford: Oxford University Press, 2010.

Atenció: Aquestes cites poden no estar 100% correctes.